Rod guide



Filed March 27, 1957 2 Sheets-Sheet l ATTORNEYS jm., @L wm c. A. BOYDROD GUIDE Filed March 27, 1937 2 Sheets-Sheet 2 ATTORNEYS Patented Jan.3l, 1939 UNITED STATES PATENT OFFICE Application` March 27,

1 Claim.

This invention relates to pump rods or tube guides for oil wells and hasfor the primary object the provision of an eflicient and inexpensivedevice which may be easily and quickly installed 5 to maintain a pumprod or tube from engaging and dragging against a Well casing,consequently eliminating wear on the walls of the casing and on the rodor tube and its couplings,

Another object of this invention is the pro- 10 vision of a device ofthe above stated character which is so constructed that its interferencewith the flow of iluid from the well will be reduced to a minimum andwill act to remove paraffin and other foreign matter from the Walls ofthe Well j; casing during the withdrawal of the pump rod or tube fromthe well casing. l

With these and other objects in view, this invent-ion consists incertain novel features of construction, combination and arrangement ofparts zu to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had tothe following description and accompanying drawings, in which Figure 1is a vertical sectional view showing a pump rod or tube equipped with aguide con structed in accordance with my invention and showing itcontacting with the walls of a Well casing for centering the pump rod ortube in the cas- Figure 2 is a sectional View taken on the line 2 2 ofFigure 1.

Figure 3 is a fragmentary vertical sectional View illustrating one ofthe bearings.

Figure 4 is a plan view illustrating one of the bearing sleeves.

Figure 5 is a detail sectional View taken on the line 5 5 of Figure 1.

Figure 6 is a vertical sectional View showing a modified form of myinvention adapted to a pump rod or tube.

Figure 7 is a fragmentary side elevation showing one of the bearings ofmy modified form of invention positioned ready for coupling.

f, Figure 8 is a fragmentary vertical sectional view illustrating thebearing of my modified form of invention in a coupled position.

Figure 9 is a sectional View taken on the line 9 9 of Figure 6.

Referring in detail to the drawings, the numeral i indicates a wellcasing, 2 a pump rod or tube mounted for operation in the well casing.During the operation of the rod or tube it will contact the walls of thewell casing if not guided 55 and consequently place wear on the wellcasing as 1937, Serial No. 133,469

well as upon itself and its coupling. To prevent this wear, my inventionis adapted to the pump rod or tube during the assembling thereof in thewell casing so as to guide the movement of the tube or rod during thepumping operation.

My invention consists of spaced bearings 3 joined together by resilientmembers 4 each provided with an offset portion 5 of considerable lengthand which contacts the well casing to steady or guide the movement ofthe pump rod or tube, the latter sliding freely in the bearings 3. Theresilient members 5 contact the casing I with sufficient force toprevent displacement or endwise movement of the guide with the rod ortube 2.

Each bearing consists of a sectional housing 6 on which are secured themembers 5. The sections of the housing have interfitting barrels 'I toreceive pins or like fasteners 8 for joining the sections together. Asectional bearing sleeve or liner 9 is fitted in the housing I and haslianges IIJ at its ends to engage with the ends of the housing.Projections II are formed on the sections of the bearing sleeve to t inopenings I2 of the housing. rIIhe projections II fitting in the openingsI2 and the flanges Ill prevent accidental displacement of the sleevewithin the housing. The bearing sleeve is constructed from any materialsuitable for the purpose.

U-clamps I3 are placed on the pump rod or tube above and below the guideso that when the pump rod or tube is pulled the guidewill be removedtherewith from the casing. By rotating the pump rod or guide during itswithdrawal from the casing the members 5 of the guide will act asScrapers to remove paraliin and other foreign matter which may beadhered to the wall of the well casing. When the guide is inserted inthe well casing the members 5 are contracted so that after being placedin the casing they will bear on the well casing with force sufficient toretain the guide in a selected or proper location within the wellcasing. The U-clamps I3 are positioned far enough apart on the pump rodor tube so as not to interfere with the guide during the pumpingoperation providing that the pump rod or tube is of the reciprocatingtype.

Referring to my modified form of the invention, the bearing housings areindicated by the character I4 and each consists of sections I5 and I6,Each bearing housing I4 has the sectional bearing sleeve 9' therein. Thesection I5 of the housing has formed thereon hook-shaped members I'I toengage with lugs I8 for holding the sections assembled. To assemble ordisassemble the bearings, the sections I 5 and I6 are moved endwise ofeach other. After the assembling of the sections of the housing a hingeclamp I9 is placed about the housing.

The bearings I4 are connected by resilient members 2| each having offsetportions and each having a limited spiral pitch thereto, as shown inFigure 6, so that during the rotation of the guide with the removal ofthe pump rod or tube from the Well casing the resilient members willefficiently scrape parafiin and other foreign matter from the Walls ofthe casing.

A guide of the character described and shown in the drawings may bemanufactured at a nominal cost and is easy to install and should itbecome accidentally disconnected from a pump rod or tube and fall in thewell casing its removal can be easily accomplished by an ordinaryfishing tool due to the construction of the guide permitting a fishingtool to readily hook therein.

The resilient members 4 and 2| of the different forms of my inventioncontacting the Well casing during the reciprocation of the pump rod Willact as shock absorbers to absorb the vibration set up from the Whippingof the pump rod.

What is claimed is:

A guide comprising bearings each including sectional housings and asectional liner, one section of each housing having hooks formedthereon, lugs formed on the other section of said housing to be engagedby the hooks, flanges formed on the liner and engaging the ends of thehousing, lugs formed on the liner, said housing having openings toreceive the last-named lugs, resilient guide means connecting thebearings, and hinged detachable clamps surrounding the housings of* thebearings,

